The crazy feeling goes away. It's the simple act of doing something that you know angers, terrifies or annoys so many other people. I got over it pretty fast, but I've seen vegans hang on to it for long periods of time, unfortunately. I think some people have a harder time in general with asserting their own identity and beliefs, let alone standing up for others. I mean, think about how many human atrocities that happened on this Earth not because of the evil people but because of the numerous humans who are too afraid to take a stand against the norm (let's not even talk about the ones who simply don't care).
I have had a lot of opportunity to think about it after almost five years, especially being around a university for the past couple of those years. Like some people are so PROUD they're not racist, and sure it's bad to be racist I absolutely agree, but I wondered to myself, because I'm vegan, how many of these "proud" people would have actually stood with people of color 50 years ago when it wasn't socially a thing that had already been programmed into society.
Eventually you realize they're the ones who are crazy! Ha ha. Well some of them are crazy. Others just are unaware, like we were once.